package day05;

public class Demo01 {
    public static void main(String[] args) {
        int sum=0;
        for (int i = 1; i < 100; i++) {
            if (i%2==0){
            sum+=i;
            }
        }
        System.out.println("1-100之内所有偶数的和为"+sum);
    }
}
